Phoenix fd temperatures and octane

Forums: Phoenix fd temperatures and octane
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A. Operating System, including version (i.e. Win 7, OSX 10.11.2, Ubuntu 14.04, etc.)
B. Graphics Card(s) model (i.e. GTX 580 - 3GB, TITAN, etc.)
C. RAM Capacity (i.e. 6 GB)
D. Nvidia driver version (i.e. 7.50, 7.5.22)
E. OctaneRender Standalone version, if installed (i.e. 2.24.2, 2.23, etc.)
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Phoenix fd temperatures and octane

Postby coilbook » Sun Aug 13, 2017 2:54 am

coilbook Sun Aug 13, 2017 2:54 am
seems like octane can never matches preview of phoenix fd fire and does not scale flame properly,

I attached a picture that shows black parts of the flame (THIS IS NOT SMOKE BUT LOW TEMPS ) are 700 kelvin lowest preview temperature. For some reason octane renders flames near propane tank where in preview it is clear grid meaning temps are even lower than 700 kelvin. So we scale down grid and emission and what we have. Clear grid near propane tank still renders flames but temperatures at 700k are not even visible even though they are higher than clear grid near propane tank Hopefully I explained it right

I think there is wrong method used for phoenix fd flame rendering

By the way still wanting to know how to choose what max grid value to use depending on grid size
Attachments
temps problems.jpg
coilbook
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Re: Phoenix fd temperatures and octane

Postby coilbook » Sun Aug 13, 2017 3:01 am

coilbook Sun Aug 13, 2017 3:01 am
update:

seems like it is a problem with motion blur. I think there is a bug with flames and motion blur. Fire looks ok with mb off Also I posted before flame mb looks grainy\

in this image mb is OFF. Looks like MB makes some clear grid cells have flames

This is how mb should look like in a real footage https://youtu.be/bwqk8kw4ado
Attachments
mb bug.jpg
coilbook
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